Absorption ice and refrigerating machine.



No. 669,934. Patented Mar. 12, |901` B. THOENS. i

l ABSORPTION ICE ANU REFRIGEHATING MACHINE.

(Application filed June 11. 1900.

rre Mtns concurran ruoENs, or'unw ORLEANS, LOUISIANA@ ABSORPTlON lCE ANDREFRIGERATNG MACHINE.

SPECIFICATION forming part of Letters Patent No. 669,9345,.dated March12, 1901; appncanoniea June 11,19oo.4 semina. 19,920. Nds-@dem To @ZZwhom t may concern: l

Be it known that I, BpnoHAnD THOENS, a subject of the Emperor ofGerxnany,.residing at New Orleans, in the parish of Grleans and State ofLouisiana, have in vented certain `new and useful Improvements inAbsorption Ice and Reirigerating Machines; and l do hereby declare thefollowing to be a full, clear, and.

exact description of the invention, such as willenahle others' skilledin the'art to which it appertains to make and use the saine.

My invention `relates to improvements in ice and refrigerating machinesof the absorption type; and the object of the invention is to provide'an apparatus by whichmay be accomplished a fuller and a more nearlyperfect exchange of the diierences of temperature between the differentdui-ds used and-to obtain a greater proportion of condensed or distiallycooled .and in the second Vvessel the cold fiuids are partially heated.

All parts of the apparatus are arranged with a View toderiving thegreatest benefit ter be more fully described.

My invention will be understood by referfor `the purposes mentioned, aswill hereinafence to the accompanying drawing, wherein areshown suchparts of an absorption ice or refrigerating machine as are essential fora clear understanding of the invention, parte `referred. to v asammonia-condenser,fanimonia pump,V absorber, weak liquor cooler, watercooler, boiler pump,`

vacuum-pump, dac., being understood to refer to devices of any approvedconstruction or type suitable for the purposes required, and being wellknown inthe art are notillustrated. The drawing illustrates a vertical Yf such portionslof the apparatus as elnbo l {Qinyinvention and arenecesjsary to a complete understanding thereof and its mode ofoperation.

The parts of the machine illustrated in the drawing are designedespecially for ice-making, although they' may be used for other re`frgerating purposes. v

A represents a generator containing a steam heatingcoil'a, which entersthe bottom of the generator, and ,a rich-liquorheating coil b, whichenters near the upper portion of the generator and the lower end ofwhich terminates in a stand-pipe c, provided at its upper end with aspray-plante".` d. The general forni `of this-generatoi-,ftherooil b,stand-pipe c, and spray-plate d I ,do not claim as new in connectionwith this apparatus, as a patent has' beengranted to me forthese'features, No.

284,515, dated September 4,1893,and I have 7e introduced these here incombination with the new features hereinafter described for the sake ofbetter illustration.

A closed vessel B containsac'oil e for hot lammonia-ga's, one end ofwhich coil is connected with the upper part of the generator A, and theother end of which is connected with an ammonia-gas condenser. (Notshown.) The vessel B contains also a coil f for weak liquor. The pipeleading-to said coil f starts from the lower part of the generator A,and after passingthrough the vessel B passes to a weak-liquor cooler.(Not shown.) A. third. coil g in the vessel Bis provided for the passageof` any available exhauststeam from pumps or other source. leading tothe coil g enters a suitable sep `rator F andconnects with anexhaust-steam .receiver E, whgen'ce itpassesV through another separator'F, and 4after passing through `the One end ot' the pi e vessel Bterminates in the lower partei the liquor, which is forced throughsuchlcoil by means of` an ammonia-pump from the' absorber, (notshowmlandthe outlet of the.

eaidcoil is connected 'with the top end of the rieh-liluorfheatingcoil-b, located within the gene'raitdir'A. The vessel C also contains acoils), lue upper `end of which coil is connected with a cooling-watersupply, and the outlet of which eenuee'ts with ia IilterDUllus- Y sel B.The vessel C contains a third coil Z,

connected at one end with a cooling-water supply, the pipe being allowedto carry olf wat-er from the said `from the pumps or other coil aswaste. .Y

The outletof thfsteam heating-coil a in generatorA enters 1e lower partof vessel C. A pipe m connects thevessel C with a Watercooler (notshown)for conveying from the said vessel C condensed or distilled Water foruse for freezing purposes. A pipe q connects the vessel C with avacuutn-puinp. shown.)

The operation of the machineis as follows: A solution of ammonia-gas inwater, which enters the generator A through Athe pipe and passes throughthe coil @discharges into the stand-pipe c in the lower erator and isheated in the surrounding gas and by contact with tf-he steam-coil a.The gas is thereby lseparated from the water and passes off through thepipe c, the hot weak liquor remaining in the generator. The condensedwater formed in the coil a passes through the pipe a out of the bottomof the generator into the vessel C.

the generator A by The hot weak liquor passes from thegenera-y tor Athrough the pipej'and its coil within the vessel B, through the lattervessel, which i is partially filled with Water, and in the said vesselthe hot weak liquor passing through -the coilf parts with some of itsheat by evaporating some of the surrounding water within the saidvessel, and it thence passes out to a Weak-liquor cooler (hereinbeforereferred to,'but not shown) to be further cooled. The hot am monia-gasescaping from the generator through the pipe c passes through the coilin such pipe in the vessel B and thence on to they ammonia-condenser(not shown) to be liquefied. During its with some of its heat byevaporating some of the Water surrounding such coil, and thereby`becomes partially cooled. All exh'a ust-steam available source passes,by way of. the pipe g, through the separator F into the exhaust-steamreceiver-` E and thence through another separator F and through thecoilin the vessel B into the vessel C. During itspassage through the coil gin the vessel B the exhaust-steam is condensed by evaporating some ofthe Water.

surrounding such coil within the vessel B, and this condensed water isthe vessel C. Through the pipe h, which connects the upper parts of thevessels B and C,

` all the steam generated in the vessel B by heat from the coils e, j',and g is conducted into the vessel C. (Any grease extracted bythe sepaatthe other end of the coil (Not portion of the genpassage through thecoil ein the vessel B this hot ammonia-gas parts discharged into ratorsF and F from the exhauststeam passes by connections o o into the lowerpart oi the exhaust-steam receiver E,'fron1 Where it is 'o discharged bymeans of a waste'pipe jp, so that no portion of such grease as may becontained in the exhaust-steam will enter the vessel C.) Cold strongliquor is forced, by

means of an aminoniapfti mp,(not shown,) from 75 the absorber throughthe pipe t' and its coil within thevessel C on t the generator A, wherethe pipe z' connects with the coil b in the upper part of the generator.In this manner the cold strong liquor is delivered hot into the 8ogenerator for the-separation of the ammo, nia-gas therefrom, ashereinbefore described. As stated, the strong liquor enters the vessel Cthrough the coil in the pipe 't' in a cold state, and the pipej conductscold water from a suit- 8; able source through this coil within theVessel C to the filter D. The steam generated in the Vessel'B passingover into the vessel C is condensed on the cold surfaces of therich-liquor coil 1T, the cooling-water coilj, and 9o' the coil Z,through which a stream of coolingwater also passes. The condensation ofthis steam in the vessel C causes the partial heat ing of the richliquor passing through the coil i and of the water passing throughthecoilj. Thus the rich liquor passes froml thefcoil in the 'vessel C tothe coil b in the generator A in a partially-heated condition, thuslessening the amount of heat necessary to cause its separation in thegenerator, and the water `loo passing through thecoil j in the vessel Cis delivered to the vessel B in a partially-heated state, thusfacilitating its evaporation within the vessel B. A portion of the wateris'deliv: ered directly through the pipe K to the vessel B after passingthrough the ilter, the amount being regulated by the valve n, andthebaiance of the water is conducted by the-branch', pipe K tothe'boiler-pump (notshown) which supplies the boiler used for operatingthe cej t-xo plant. It is also apparent that they water thus fed to thepump is partially heated and the production of steam in the boilercorrespondingly assisted. y The third coil Z, which passes throughthe-"1 1'5 vessel C, is provided for the passage of additionalcooling-water to insure a perfect and complete condensation of all steamentering the said vessel, and this wateris allowed toA run off as wastewater through the pipe Z, as izo shown.Y Should more -condensed water"needed for freezing purposes, additional steam may be introduced byabranch piper, (indicated in dotted 1ines,) connected with the pipe g.All ofthe condensed water collected in the vessel C is conducted bymeansof the pipemto the distiHed-watercooler(notlshown) y to be furthercooled for freezing purposes.

'The vessel C has connected thereto a pipe q, to which would be attacheda Vacuum- [3o pump, (not sho,wn,) so as tio-provide means for loweringthe boiling-point of the Water surrounding the coils cfg, and this alsoprovides means for withdrawing from the concease/i vessel @any air orgases that may he contained in the Water.

In order to be able to discharge the water lfrom the vessel C, thelatter innst be elevated to a position corresponding to the extent oflthe vacuum produced therein,` the pipe m servingl after the manner of awater-baroni eter.

In the arrangement hereinbetore described, and shown in theaccompanying' drawing, it will be seen that the vessels B and C embodyin themselves alone the 'various elementsnamely, an exchanger, arolrlionor heater, a steam-condenser, a reboiler, and a feed-waterheater-cach of which elementsis necessary 1o the operation of anabsorption ice-making machine, and most of which, if not all, ordinarily constitute separato elements oi an icemaking plant.'

condenser and weak-liquor cooler, and, fur.

ther, by passing the steam generated thereby over into another closedvessel, wherein it is condensed, I obtain not only the condensed waterfroth the actual exhensosteain, condensed in the coil leading from pumpsend frolnthe heating-coil in the generator, but I obtain yan additionalamount of condensed water due to the evaporation of the water in the'first-named ve sel by contact-coils, coils throughv which such hotfluids pass.-` in ad dition to this I obtain hot feed-.water for theboiler. i

Having thus described my invention, whatl I. claim, and desire to secureby Letters Pat-` ent of the United States, is-m v el. In am absorptionice or refrigeration machine, the combination `with a closed vessel; asecond closed vessel, and a steam connection betweenl seid vessels; of aplurality of coils located in the first vessel; a gasgenerator, astrong-liquor connection between one of the coils in the second vesseland the said generator; a weak-liquor connection between said generatorand one of the coils in the first vessel, al cold-strongliquorconnection with one ol the coils in the second sessel; cold-waterconnections with other ot the said coils in said second vessel;connections between a a second closed vessel, and a steam Vconneco coilslocated in the first vessel; a iras-generator; a strong-liqnorconnection between ond vessel; a weak-liquor connection between the saidgenerator and one ot' the coils oi' the first vessehaheated-gasconnection between lthe generator and another of the coils inthe first vessel; a colli-stroirliquor connection said secondvessel;connections between cold-watercoil in the second vessel and4 thereceiving partially-heated water from a coil in the second vessel, andthe second vessel receiving steam from the vapor-ization of the waterin' the first vessel, substantially as de scribed.

a second closed vessel, and a steam connection between the said vessels;of a plurality of coils located Ain the first vessel; a gas-gen raton-astrong-liquor connection between the generator and one of the coils ofthe second vessel; a'wealoliqnor connection between the said generatorand one ofthe coils of the first ve'ss l; a.cold-strong-liquorl'connection with onefof the coils in they secondvessel; 'cold-waiter connection with other of said coils in saidlsecoudvessel; connections between Va coldlwater coil in the second vesselandthe interior of the iirst vessel; a steam connec tion between one ofthe coils of the first vessels-and the interior oi' the second vessel,the steam thus entering being,r condensed `in the second vessel; thefirst Vessel receiving partially-heated water from a coil in the secondvessel, and the second vessel receiving steam ,substantially esdescribed.

4, In an labsorption ice or refrigeration inachiethe combination with aclosed vessel,

second closed vessel and a steam connection between the upper portionsof said vessels; of a plurality of coils located in the iirst vessel;A agasgenerator; astronef-liquor connection between one of the coils in thesec ond vessel and said 'eeiiieratoig a weak-liquor connection betweenthe said generator and one of the coils in the iirst vessel; a heatedgasconnection between the generator and anr other ofl the coils in the'Iirst vessel; a cold strongdiqnorconnection with one of the coils inthe second vesser; eold-water connections with others of the said coilsin said second vessel; connections between one of the cold- \vatercoiisin the second vessel and the interior of the', iirst vessel;4 a steamconnection between one ofthe coils in the first vessel and the interiorof the second vessel; the first vessel receiving partiaily-heated waterVfrom a chine, the combination with a closed vessel,`

the generator and one of the coils o the sec?4 with one of the coilsinthe second vessel; cold? water connection with other of said coilsinIn an absorption ice or refrigeration ina-- chine, the combinationw'th aclosed vessel,

'generatedfroin the water in the iirst vessel,

ion between the said vessels; of a plurality interior of the firstvessel; the first vessel IIO coil in the second vessel and the secondvcssel receiving steam from the vaporization of pipe conducting thesteam generated from the Water in the first vessel, substantially asythe Water in contact with thehot-liuid coils described. Jover` intocontact' with the cold-fluid coils,

5. In an absorption ice or refrigeration masubstantially as described.

chine, means for exchanging the temperatures '7. In an absorption ice orrefrigeration ma of the dierent fluids used, consisting of a` fchinc,means for exchanging the temperature .group of hot-fluid coils submergedin Water;h of the dilerent fluids used, consisting of a a group ofcold-fluid coils; hot gas, and hotgroup of hot-fluid coils submerged inwater; weak-liquor connections with the coils of the a group ofcold-fluid coils; hot gas, and hothot-fluid group; cold-strong-liquorand cold- Weak-liquor connectionswith the coils of the water connectionwith the coils of the coldhot-uid group; cold-strongliquor and coldfluidgroup; and means for conducting the water connection with the coils ofthe coldsteam from the water vaporized by contact fluid group and thespace surrounding the with the hot-uid coils into contact with `thegroup of hot-duid coils; and a pipe conductvcold-fluid coils,substantially as described. ing the steam generated from the Waterincoil of the cold-duid group and the space sur- .t JNO. J. WARD,

` `6. In an absorption ice or refrigeration macontact with the hot-fluidcoils over into coni chine, means for exchanging the temperatures tactwith the cold-fluid coils; and a pipe leadof the different fluids used,consisting of a ing from the strong-liquor coil in the coldgroup ofhot-Huid coils submerged in water; fluid group to a gas-generator,substantially a group of cold-fluid coils; hot gas,l and hotasdescribed.

weak-liquor connections with the coils of the In testimony whereof Iaffix my signature hot-fluid group; cold-strong-liquor and coldinpresence of.v two witnesses. water-connection with the coils of thecold- 1 BURCHARD THOENS. fluid group; a connection between a water-`Witnesses:

rounding the group of hot-fluid coils; and a ANDREW OVERDI.

